A pairof glasses that shine green light into the eyes could provide a cure for jet lag, Australian researchers say.

A team from Flinders University in Adelaide has designed the Re-Timer, the world’s first pair of spectacles designed to combat insomnia and jet lag by resetting the body clock, and claims it is the only wearable option available.

Sleep expert Professor Leon Lack said: “Our extensive research studies have shown that green light is one of the most effective wavelengths for advancing or delaying the body clock. Body clocks or circadian rhythms influence the timing of all our sleeping and waking patterns, alertness, performance levels and metabolism.”